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1 /* | 1 /* |
2 * Copyright (C) 2010 Google, Inc. All Rights Reserved. | 2 * Copyright (C) 2010 Google, Inc. All Rights Reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
12 * | 12 * |
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY | 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR | 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 */ | 24 */ |
25 | 25 |
26 #ifndef HTMLScriptRunner_h | 26 #ifndef HTMLScriptRunner_h |
27 #define HTMLScriptRunner_h | 27 #define HTMLScriptRunner_h |
28 | 28 |
29 #include "PendingScript.h" | 29 #include "PendingScript.h" |
30 #include <wtf/Deque.h> | |
31 #include <wtf/Noncopyable.h> | 30 #include <wtf/Noncopyable.h> |
32 #include <wtf/PassRefPtr.h> | 31 #include <wtf/PassRefPtr.h> |
33 | 32 |
34 namespace WebCore { | 33 namespace WebCore { |
35 | 34 |
36 class CachedResource; | 35 class CachedResource; |
37 class CachedScript; | 36 class CachedScript; |
38 class Document; | 37 class Document; |
39 class Element; | 38 class Element; |
40 class Frame; | 39 class Frame; |
41 class HTMLScriptRunnerHost; | 40 class HTMLScriptRunnerHost; |
42 class ScriptSourceCode; | 41 class ScriptSourceCode; |
43 | 42 |
44 class HTMLScriptRunner : public Noncopyable { | 43 class HTMLScriptRunner : public Noncopyable { |
45 public: | 44 public: |
46 static PassOwnPtr<HTMLScriptRunner> create(Document* document, HTMLScriptRun
nerHost* host) | 45 static PassOwnPtr<HTMLScriptRunner> create(Document* document, HTMLScriptRun
nerHost* host) |
47 { | 46 { |
48 return adoptPtr(new HTMLScriptRunner(document, host)); | 47 return adoptPtr(new HTMLScriptRunner(document, host)); |
49 } | 48 } |
50 ~HTMLScriptRunner(); | 49 ~HTMLScriptRunner(); |
51 | 50 |
52 void detach(); | 51 void detach(); |
53 | 52 |
54 // Processes the passed in script and any pending scripts if possible. | 53 // Processes the passed in script and any pending scripts if possible. |
55 bool execute(PassRefPtr<Element> scriptToProcess, int scriptStartLine); | 54 bool execute(PassRefPtr<Element> scriptToProcess, int scriptStartLine); |
56 | 55 |
57 bool executeScriptsWaitingForLoad(CachedResource*); | 56 bool executeScriptsWaitingForLoad(CachedResource*); |
58 bool hasScriptsWaitingForStylesheets() const { return m_hasScriptsWaitingFor
Stylesheets; } | 57 bool hasScriptsWaitingForStylesheets() const { return m_hasScriptsWaitingFor
Stylesheets; } |
59 bool executeScriptsWaitingForStylesheets(); | 58 bool executeScriptsWaitingForStylesheets(); |
60 bool executeScriptsWaitingForParsing(); | |
61 | 59 |
62 bool isExecutingScript() const { return !!m_scriptNestingLevel; } | 60 bool isExecutingScript() const { return !!m_scriptNestingLevel; } |
63 | 61 |
64 private: | 62 private: |
65 HTMLScriptRunner(Document*, HTMLScriptRunnerHost*); | 63 HTMLScriptRunner(Document*, HTMLScriptRunnerHost*); |
66 | 64 |
67 Frame* frame() const; | 65 Frame* frame() const; |
68 | 66 |
69 void executeParsingBlockingScript(); | 67 void executeParsingBlockingScript(); |
70 void executePendingScriptAndDispatchEvent(PendingScript&); | 68 void executePendingScriptAndDispatchEvent(PendingScript&); |
71 void executeScript(Element*, const ScriptSourceCode&) const; | 69 void executeScript(Element*, const ScriptSourceCode&) const; |
72 bool haveParsingBlockingScript() const; | 70 bool haveParsingBlockingScript() const; |
73 bool executeParsingBlockingScripts(); | 71 bool executeParsingBlockingScripts(); |
74 | 72 |
75 void requestParsingBlockingScript(Element*); | 73 void requestParsingBlockingScript(Element*); |
76 void requestDeferredScript(Element*); | |
77 bool requestPendingScript(PendingScript&, Element*) const; | 74 bool requestPendingScript(PendingScript&, Element*) const; |
78 | 75 |
79 void runScript(Element*, int startingLineNumber); | 76 void runScript(Element*, int startingLineNumber); |
80 | 77 |
81 // Helpers for dealing with HTMLScriptRunnerHost | 78 // Helpers for dealing with HTMLScriptRunnerHost |
82 void watchForLoad(PendingScript&); | 79 void watchForLoad(PendingScript&); |
83 void stopWatchingForLoad(PendingScript&); | 80 void stopWatchingForLoad(PendingScript&); |
84 bool isPendingScriptReady(const PendingScript&); | 81 bool isPendingScriptReady(const PendingScript&); |
85 ScriptSourceCode sourceFromPendingScript(const PendingScript&, bool& errorOc
curred) const; | 82 ScriptSourceCode sourceFromPendingScript(const PendingScript&, bool& errorOc
curred) const; |
86 | 83 |
87 Document* m_document; | 84 Document* m_document; |
88 HTMLScriptRunnerHost* m_host; | 85 HTMLScriptRunnerHost* m_host; |
89 PendingScript m_parsingBlockingScript; | 86 PendingScript m_parsingBlockingScript; |
90 Deque<PendingScript> m_scriptsToExecuteAfterParsing; // http://www.whatwg.or
g/specs/web-apps/current-work/#list-of-scripts-that-will-execute-when-the-docume
nt-has-finished-parsing | |
91 unsigned m_scriptNestingLevel; | 87 unsigned m_scriptNestingLevel; |
92 | 88 |
93 // We only want stylesheet loads to trigger script execution if script | 89 // We only want stylesheet loads to trigger script execution if script |
94 // execution is currently stopped due to stylesheet loads, otherwise we'd | 90 // execution is currently stopped due to stylesheet loads, otherwise we'd |
95 // cause nested script execution when parsing <style> tags since </style> | 91 // cause nested script execution when parsing <style> tags since </style> |
96 // tags can cause Document to call executeScriptsWaitingForStylesheets. | 92 // tags can cause Document to call executeScriptsWaitingForStylesheets. |
97 bool m_hasScriptsWaitingForStylesheets; | 93 bool m_hasScriptsWaitingForStylesheets; |
98 }; | 94 }; |
99 | 95 |
100 } | 96 } |
101 | 97 |
102 #endif | 98 #endif |
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